1.Grease gun can power through clogged grease fittings with a motor that delivers up to 6,000 max PSI 2.High-volume pump of the grease gun pushes up to 200g/min high-flow applications. 3.Reach hard to access grease fittings with the flexible hose 4.Locate hard to see grease fittings in dark work areas with the bright LED 5.Air-bleeder valve assists in pump priming after cartridge changes.